Williams was very involved in civil rights activism in Omaha. On September 20, 1894,
Ida B. Wells came to speak and organize a branch of the anti-lynching league in Omaha. In December 1894 the Anti-Lynching league was founded with Williams as president. In that role, Williams frequently sought to calm Omaha's black community in the face of racial tensions, such as during the
Spring Valley, Illinois black-Italian labor war in August 1895. He also was a member of the
Afro-American League branch in Omaha and ran for membership of the Omaha Board of Education. He was a member of the Negro Press Association and when the group met in Omaha during the
Trans-Mississippi Exposition in August 1898, he was elected secretary of the association. In August 1906, black members of the Omaha community formed a group called the "Progressive League of Douglas County", Williams president, to pressure the county Republicans to include blacks on the legislative ticket, in particular
Millard F. Singleton. His connections with black and civil rights elites brought many speakers to Omaha, including the aforementioned Wells,
Joel Elias Spingarn and
Robert W. Bagnall. After a visit to Omaha by
W. E. B. Du Bois in 1919, he organized and served as president of the state branch of the Omaha branch of the
NAACP. His activism included many different issues frequently speaking from the pulpit and in the press. He spoke out against Jim Crow cars, voted in opposition to prohibition in an episcopal church meeting, he called for calm after the
lynching of Willy Brown in 1919, rallied Omaha support of the
Dyer Anti-Lynching Bill, and opposed segregated pools. He was a close friend to
Harrison J. Pinkett, and with Pinkett, spoke out in favor of black troops discharged in relation to the
Brownsville Affair and supported black troops serving in World War I. He served as the first black to be a member of the Omaha Community Chest's governing board, served on the
Omaha tornado relief commission in 1913, was treasurer of the Woodson Cultural Center and member of the board of the Omaha branch of the
Urban League. ==Journalism==